Landing on Io would be completely different from Titan. Because of the violent nature of Io, a cheaper probe may actually be a benefit, because like Venus, we would have to study the local conditions before sending more complex landers.

Of course another trick would be to put orbiters around Jupiter, Saturn etc which could be used to relay signals.

> Landing on Io would be completely different from Titan.

Sure, but landing is not necessary for doing much more science than we are right now!

An orbiter dedicated to Io would dramatically increase our knowledge of this unique and special moon.